1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a13a9717ab3491dfc20148d16533e16ef31ebe7115c16ed2b3a8a105d09d575. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d41bec7-f342-427a-a7c7-0997a6c27213.json and https://artists.proofprofile.net/proofs/artist/2d41bec7-f342-427a-a7c7-0997a6c27213.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trio Jazz - Background Music for Working
Backdrop for Working - Phenomenal Trumpet Jazz
Happening Tenor Sax Jazz - Background for Work
Wordless Instrumental Jazz for Focus at Work
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d79e26af4e888642c4d1bd7a301769fa2d26dbe5b0c5059da112e00587f37e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fb7fd50f9dee8b205e9b7b36d2ed8a0bc142e420c554cd03e5ef62c47e4a0d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65011b6bcb6670cf700446373b7244227cf16b39aa1d8d582c94b21456c507a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e3d837e9ca2277ca3ace06c7b4050bffd8b758af8b7b88f56a65c4ebe8c034. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220b60ed3e938b50c20ee929a4f14c1e1d0abbc8bc1154877bfacf5f50369398. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943db60fda48f73053305ec633a211091a30a052db25eecebcb4eea8b6cf500e. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac669068b5e3dc95d68af9df7c9f68f68d47baaca9a514928af19efd0ab4c1e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c994159f2fe69f02b9aaee0f3ed8b5cf8e9028fc705db7f5bd5d54e729a3953. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb282b0af3cb39499af40d5ee9c1d7a98552526cbd4493b12f58e6241282cbeee. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f401231ea876e60f41f331ade53c2e978ea6fbedf4c54995b5d4f5e070242a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c0d83cceb41d5f35a55ba0fb6c539b7ab02889df172167ffe738983ed53cf3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cfd9ed11ced45a99c74c3553f17d8d73fde9e6852df695a001460bce880025. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba18d8a4f0f99505621c6b7bab6c55fcca879fec979f221b0097377f2944a0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2477840979557206b11441e2e8936fdaa8a20b0b4b9d416a1e97634aae212a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6468019.
No Drums Jazxz - Background Music for Reading
Relaxed Jazz Trio - Background for Remote Work
No Drums Jazxz - Background Music for Relaxing
Tremendous Music for Cleaning - Electric Piano and Alto Saxophone
Backdrop for Family Meals - Dream-Like Bossanova
Music for Dinner Parties - Trumpet and Soprano Sax
(Trumpet and Soprano Sax Solos) Music for Dining Out
Luxurious Music for Coffee Time - Trumpet and Alto Sax
Mind-blowing Background Music for Evenings
Romantic Jazz Trio - Ambiance for Coffeeshops
Funky Jazz Organ - Bgm for Tropical Outros
Classic Music for Cooling Off in Silence - Jazz Quintet
(Quintet Jazz) Music for Long Summer Days
Brilliant Jazz Violin - Ambiance for Mystical Days
Glorious Jazz Violin - Background for Long Summer Days
Music for Virtual Meanings (Jazz Quartet)
Music for Luxurious Trips - Sunny Jazz Quartet
Urbane Music for Calculated Hours - Harmonica Solo
Acoustic Smooth Jazz Guitar - Background for Improving Work
Music for Improving Work - Deluxe Harmonica Solo
Music for Calculated Hours - Number One Harmonica Solo
Amazing Music for Relaxing Experiences - Harmonica Solo
Music for Entertaining Loads (Jazz Organ and Guitar)
Binaural Beats: Enhance Focus and Concentration Vol. 1
Phenomenal Music for Energetic Ballad - Piano Duo
Piano Jazz Duo - Music for Mellow Journeys
Music for Great Lights - Bossa Guitar Trio with Jazz Organ
Jazz Organ and Bossa Guitar Trio - Music for Repeating Anthems
Music for Keen Spirits (Bossa Guitar Trio with Jazz Organ)
Mysterious Music for Easy Going Days - Bossa Guitar Trio with Jazz Organ
パピー・ラブ・ドギー・チューン
Tidiga Morgonstunder bland Sjöns Näckrosor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218ed271da447cb0964e5e838b3bcb695cb0f5f7357d9b027b5fa0b6e6d5499. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBPS85961650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55245a8712c7c7d7b78ae736dce4232569d5ed0e0d8a9be4a738a0038c88608. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e766f5cf15553b2bb8606897a20a1820a3afa1f549e80b54d8057cab1a21a1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a26b13641d95545d31c442e3459760231b9c139929b927e28aa8d7659f4c6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f296fb0033c7ada70240aee6091aa246ceb38e89ed01bfb3ed758588906ea5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9e5cf2c133f43062b130d7180ae27df179c0777607897eb6444e2b684f0721. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da6a0cf406661a8e9222e4bfcfe77f6ad47fb323892afcbe268a09fced69fad. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0750557dd7573c3889975aabc339007535afe279e78917658ec548c959ddc409. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360f124ab62cc1827a314c8a7281ebe8b456a8c0bdcec4c117ee8ab741fbb7bc. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025f85004a1ac6bf2f21b84c5b5b70db49202a646a6d03565e2b314b5777ba05. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffc994893f25f6b1bff38094703703417281d0ad28f820e8fa0e57d9e2e47bf. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2416258.